PT-2020-19679 · Fun-Map · Fun-Map

Published 2020-04-28 · Updated 2022-12-02 · CVE-2020-7644

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions fun-map versions 3.3.1 and earlier

Description The issue concerns Prototype Pollution, where the assocInM function can be tricked into adding or modifying properties of Object.prototype using a proto payload. This allows for potential manipulation of the object prototype.

Recommendations For fun-map versions 3.3.1 and earlier, consider restricting the use of the assocInM function until a patch is available to prevent potential prototype pollution attacks. As a temporary workaround, avoid using the proto payload in the affected function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Prototype Pollution

Weakness Enumeration

CWE-1321

CWE-915

Related Identifiers

CVE-2020-7644

GHSA-P33M-7W7F-GMJ8

SNYK-JS-FUNMAP-564436

Affected Products

Fun-Map

References · 7

• 🔥 https://github.com/nathan7/fun-map/blob/master/index.js#L137, · Exploit
• 🔥 https://snyk.io/vuln/SNYK-JS-FUNMAP-564436 · Exploit
• https://osv.dev/vulnerability/CVE-2020-7644 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-7644 · Security Note
• https://osv.dev/vulnerability/GHSA-p33m-7w7f-gmj8 · Vendor Advisory
• https://github.com/nathan7/fun-map/blob/master/index.js#L137%2C · Note
• https://t.me/cvenotify/3351 · Telegram Post